自制发酵食品中毒的致病菌是
A.致病性大肠杆菌B.肉毒梭菌C.蜡样芽孢杆菌D.产气荚膜梭菌E.副溶血性弧菌
参考答案:B
In one corner of the garden there stands a tittle board,_______“Keep off the grass.”
A.On which writes
B.it says
C.on which is read
D.which reads
按照CCAR145部的规定,直接涉及维修许可证的变更应至少提前()天提交书面申请,不直接涉及维修许可证的变更应至少提前()天通知民航总局或者民航地区管理局。
A、60,20
B、60,30
C、30,20
D、30,30